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Band offsets in ITO/Ga<sub>2</sub>O<sub>3</sub> heterostructures
Carey IV, Patrick H.,Ren IV, F.,Hays IV, David C.,Gila IV, B.P,Pearton IV, S.J.,Jang IV, Soohwan,Kuramata IV, Akito Elsevier 2017 APPLIED SURFACE SCIENCE - Vol.422 No.-
<P><B>Abstract</B></P> <P>The valence band offsets in rf-sputtered Indium Tin Oxide (ITO)/single crystal β-Ga<SUB>2</SUB>O<SUB>3</SUB> (ITO/Ga<SUB>2</SUB>O<SUB>3</SUB>) heterostructures were measured with X-Ray Photoelectron Spectroscopy using the Kraut method. The bandgaps of the component materials in the heterostructure were determined by Reflection Electron Energy Loss Spectroscopy as 4.6eV for Ga<SUB>2</SUB>O<SUB>3</SUB> and 3.5eV for ITO. The valence band offset was determined to be −0.78±0.30eV, while the conduction band offset was determined to be −0.32±0.13eV. The ITO/Ga<SUB>2</SUB>O<SUB>3</SUB> system has a nested gap (type I) alignment. The use of a thin layer of ITO between a metal and the Ga<SUB>2</SUB>O<SUB>3</SUB> is an attractive approach for reducing contact resistance on Ga<SUB>2</SUB>O<SUB>3</SUB>-based power electronic devices and solar-blind photodetectors.</P> <P><B>Highlights</B></P> <P> <UL> <LI> We measured the band offsets of ITO on Ga<SUB>2</SUB>O<SUB>3</SUB>, a promising wide bandgap semiconductor for solar-blind detectors and power electronics. </LI> <LI> The band alignment is nested (type I), with a valence band offset of −0.78eV </LI> <LI> The results show the use of ITO interlayers will be beneficial to improving Ohmic contacts on Ga<SUB>2</SUB>O<SUB>3</SUB>. </LI> </UL> </P>
Mythopoesis in the Poetry of Emily Dickinson
Carey, Hilda 聖心女子大學校 1979 論文集 Vol.10 No.-
Emily Dickinson and myth are no strangers, but their relationship has been characterized all too often by misrepresentation, misunderstanding, and inaccuracy. Although frequently called one, she was no myth; her poems are not truly mythic, but they are undoubtedly mythopoeic. Long before 1881, when Mabel Loomis Todd first arrived in Amherst, ED's deliberately chosen seclusion and exclusive preference for white dresses had inspired village gossips to brand her as "The Myth." Fascinated by finding such legendary possibilities in an otherwise dull, provincial town, Mrs. Todd wrote her parents shortly after her arrival: I must tell you about the character of Amherst. It is a lady whom the people call the Myth..... She has not been outside of her own house in fifteen years, except once to see a new church, when she crept out at night&viewed it by moonlight.... She dresses wholly in white&her mind is said to be perfectly wonderful. She writes finely, but no one ever sees her..... No one knows the cause of her isolation, but of course there are dozens of reasons assigned.
Carey Renee N.,Fritschi Lin,Nguyen Ha,Abdallah Kamil,Driscoll Timothy R. 한국산업안전보건공단 산업안전보건연구원 2023 Safety and health at work Vol.14 No.4
Background: Exposure to welding fume is associated with adverse effects on worker health. The use of various control measures can reduce levels of exposure and the resulting health effects. However, little is known about the factors that may influence workers' use of control measures in the workplace and their perceived intervention needs. This study aimed to investigate workers' and other stakeholders' views on ways to improve the use of welding fume control measures in Australian workplaces. Methods: We conducted a series of online focus group discussions and individual interviews with participants who have some occupational involvement in welding, whether as workers, employers or industry representatives, union representatives, or regulators. A semi-structured question guide was used, and all discussions and interviews were recorded and transcribed for analysis. Results: Five focus group discussions and five individual interviews were conducted with a total of 21 participants. Three major themes emerged. The first addressed the current awareness of welding fume harms and concern about exposure; the second focussed on the current use of control measures, and barriers and facilitators to their use; and the last centred around intervention needs and the contents of a potential effective intervention. Conclusion: Improving the use of control measures to prevent exposure to welding fume requires knowledge around the barriers and facilitators of control, use, and the intervention needs of stakeholders. This study has provided such knowledge, which will facilitate the design and implementation of an intervention to reduce welding fume exposure and ultimately protect the health of workers.